Method using three-dimensional quantitative fluorescence spectrum derived parameters to judge oil quality and fluid types

Abstract

The invention relates to a method using three-dimensional quantitative fluorescence spectrum derived parameters to judge oil quality and fluid types. The method includes the steps of firstly, using athree-dimensional quantitative fluorescence detector to detect rock samples collected during drilling to obtain original three-dimensional quantitative fluorescence spectrum data; secondly, using theoriginal three-dimensional quantitative fluorescence spectrum data to obtain the three-dimensional quantitative fluorescence spectrum derived parameters; thirdly, according to the three-dimensional quantitative fluorescence spectrum derived parameters and the accumulated three-dimensional quantitative fluorescence spectrum historical data of the oil field, using statistical inductive method to build a diagonal included-angle method chart, an actually-measured oil containing concentration and oil-water change rate interpretation chart and a waterline deviation and standard oil sample deviationinterpretation chart. The method has the advantages that by mining three-dimensional quantitative fluorescence spectrum information, the spectrum feature identification parameters and the interpretation method are formed, and accordingly the judging accuracy of the oil quality and fluid types is increased.

Description

technical field [0001] The invention relates to the technical field of drilling, in particular to a method for judging oil quality and fluid type by using parameters derived from three-dimensional quantitative fluorescence spectrum. Background technique [0002] The three-dimensional quantitative fluorescence logging technology is to use the characteristics that aromatic hydrocarbons and other components contained in petroleum can be excited and emit fluorescence under ultraviolet light irradiation, and quantitatively calculate the oil concentration, An optical analysis method for judging the properties of fluids. The 3D quantitative fluorescence mud logging technology is developed on the basis of the 2D quantitative fluorescence mud logging technology, and it is the development and innovation of the 2D quantitative fluorescence mud logging technology. The obtained information of hydrocarbons in the formation is richer, the map is more intuitive, and it can better reflect t...

AI Technical Summary

Problems solved by technology

At present, the interpretation of 3D quantitative fluorescence mud logging mainly depends on the three parameters of excitation wavelength, emission wavelength and oil concentration. The matrix data in the original 3D quantitative fluorescence map data has not been fully utilized, and the accuracy of 3D quantitative fluorescence mud logging interpretation is still relatively high. room for improvement

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